#include <48func.h>
int main(int argc, char *argv[])
{
    char buf[] = "how are you";
    printf("strtok = %s\n", strtok(buf," "));
    printf("strtok = %s\n", strtok(NULL," "));
    printf("strtok = %s\n", strtok(NULL," "));
    printf("strtok = %s\n", strtok(NULL," "));
    return 0;
}

